1、单选题：
Microeconomics studies the allocation of
选项：
A:unlimited resources.
B:scarce resources.
C:decision makers.
D:models.
答案: 【scarce resources.】

2、单选题：
Most microeconomic models assume that decision makers wish to
选项：
A:act selfishly.
B:make themselves as well off as possible.
C:None of the above.
D:make others as well off as possible.
答案: 【make themselves as well off as possible.】

3、单选题：
What links the decisions of consumers and firms in a market?
选项：
A:coordination officials.
B:the government.
C:prices.
D:microeconomics.
答案: 【prices.】

4、单选题：
Economic models are most often tested
选项：
A:using data from the real world.
B:using data from the distant past.
C:using computer simulations.
D:using logic alone.
答案: 【using data from the real world.】

5、单选题：
Which of the statements below is/are normative?
选项：
A:B and C
B:Microeconomists study economic growth.
C:Economists need to include more reality in their models.
D:Economists will use a model until it is refuted by someone.
答案: 【Economists need to include more reality in their models.】